Compression load cells use a specific force that converts into output signals for measurement. They are essentially a block that feel a push rather than a pull. Many load cells have strain gauges that react to tension, compression, torque, and other forces applied to them. Tension is a force that pulls on the strain gauge and elongates it. Compression goes in the opposite direction, pushing and shortening the strain gauge.
A compression load cell has a single point where the force is applied to the load cell. Generally, the body is made of stainless steel because it is durable, corrosion-resistant, and waterproof. Aluminum and steel alloys are other metal alternatives used for the housing and body. The base plate needs to resist scratches, deformities and rusting.
Load cells have strain gauges aligned in a Wheatstone bridge. This network connects four resistor legs, with parallel voltage divider circuits. The voltage circuits’ middle nodes provide a measurable output. Compression cells can also carry this arrangement, which increases the accuracy of weighing measurements.
Best Uses For Compression Load Cells
Operators like compression load cells for their stainless steel construction. The metal gives them a low profile as well as ample versatility for various business applications. Stainless steel is less likely to distort over time and can thus sustain a greater difference in resistance to the forces applied. Other materials involved need to be robust.
In addition, compression load cells have a low learning curve for recording measurements. Any operator can use them, which saves the time invested in the activity. The time saved during business activities then saves on money for training and operating the scales in question.
Generally, compression load cells are best for small spaces. Given the nature of compression requires the strain gauge to shorten in size, the cell can handle a smaller area while converting the resistance into measurable output.
You will also see compression load cells on weighbridges. These truck scales aim to accurately measure larger vehicles and the items they carry, both for accurate pricing and to ensure that no overloading happens. It aims to calculate the weight of the truck itself as well as the goods involved and can record tare weight. A load cell with a large radius and a rocker column arrangement will allow the load to move, thus avoiding adversarial weights. Compression cells for weighbridges can also be used in portable models.
The single-point quality is good for unusual or off-center loads. In the case of these, the load is applied at a distance away from the cell’s central axis, for various reasons. This can lead to accuracy problems, which a compression cell can correct. Compression load cells can have a margin of error up to 0.1 percent.
Compression load cells are used in industries where products are sold by weight. Food is one such example of an industry, where weight determines the prices of various produce, grains, and prepared goods. This is because of the cells’ high accuracy owing to their single-point measurement. Sellers and buyers can ensure that they are receiving or paying a fair price for the items in question.
They are also best for high-capacity operations such as tank weighing or process engineering, the latter of which is crucial for manufacturing. Process engineering involves biochemical and chemical processes turning raw materials into the products that we use, while monitoring standard specifications. As a result, accurate measurements and proportions are essential for quality control.
The reason is that they can handle more weight than other load cells. Some capacities can run up to 50 tons on the customary scale, which is useful for heavy-duty weighing. This reduces the risk of shock overloading your strain gauges, which can become damaged in the case of the loads being too high.
Compression load cells can also handle temperature extremes owing to their design, meaning accuracy is maintained within specification even in the case of heat or cold. Some specially designed units are approved for explosive environments and can conform to weighing regulations. Scales for this purpose need to be extremely sensitive because temperature and potential physical damage can drastically affect load cell output.
Invest In Long-Term Stability With Arlyn Scales
When it comes to Arlyn Scales, you can rely on load cells that last for the long-term. Our strain gauges have been designed to handle more shock loading and heavier weights, and the engineers are always ready to innovate for various industries. We want to serve all of your customer needs, no matter the market or the business.
Reach out to us today to learn about tension and compression load cells, and custom options for you. Our representatives can answer all of your questions about load forces, and which cells are right for you. Whether you need a tension load cell or a compression model, we are ready to assist you.